on April 16, 2022
How do scientists use seafloor spreading to study the age of the sea floor?
GeologyScientists can determine the age of the seafloor by examining the changing magnetic field of our planet. Every once in a while, the currents in the liquid core, which create the Earth’s magnetic field, reverse themselves: it is called a geomagnetic reversal. This has happened many times throughout Earth’s history. How do scientists know the
on April 16, 2022
What is the difference between island arc and volcanic arc?
GeologyA volcanic arc is a chain of volcanoes, hundreds to thousands of miles long, that forms above a subduction zone. An island volcanic arc forms in an ocean basin via ocean-ocean subduction. What is the difference between island arcs and volcanic arcs quizlet? What is the difference between a volcanic arc and an island arc?
on April 16, 2022
How was the San Andreas Fault created?
GeologyThe San Andreas Fault System grew as a remnant of a oceanic crustal plate and a spreading ridge (like the Juan de Fuca Ridge) were subducted beneath the North American Plate as it moved west relative to the Pacific Plate. How was the fault line created? The plates slide under or past one another, stressing
on April 16, 2022
What tectonic plate is Mount Pinatubo on?
GeologyMount Pinatubo is an active volcano found in the Zambales Mountains on the northern island of Luzon and is part of the Luzon island arc chain at a complex intersection of micro-plates between the Eurasian and Philippine plate. What type of tectonic plate boundary is Mount Pinatubo on? The plate movement of Mount Pinatubo is
on April 16, 2022
What is another word for earthquakes and tremors?
GeologyOTHER WORDS FOR earthquake 1 quake, tremor, shock, seism, temblor. What is another term for tremors? earthquake, shiver, upheaval, vibration, agitation, flutter, quake, quaver, quiver, ripple, shake, tremble, trepidation, wobble. What is an earthquake tremor called? An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth
on April 16, 2022
Why do earthquakes cause more damage than volcanoes?
GeologyHowever, earthquakes can cause disasters without the help of a volcano. Earthquakes generate seismic waves that can release great energy. But if the earthquake occurs in an area that is not populated, it is not a human disaster. Volcanic damage occurs because of the products generated by an eruption. Are volcanoes less damaging than earthquakes?
on April 16, 2022
How are rocks made by animals and plants that decompose in the ground?
GeologyHow do animals turn rocks into soil? Other animals dig and trample rock aboveground, causing rock to slowly crumble. Chemical weathering changes the molecular structure of rocks and soil. For instance, carbon dioxide from the air or soil sometimes combines with water in a process called carbonation. What is formed when plants and animals decay
on April 16, 2022
Is there green granite?
GeologyPredominantly green granite is rare, although it is sometimes available when the granite contains a green feldspar mineral called amazonite. In most cases, though, green granite is most likely a type of metamorphic rock with an abundance of serpentine such as marble, or other types of rock, such as soapstone. What granite is green? What
on April 16, 2022
How old is zealandia?
Geology1 billion years old1 billion years old, about twice as old as geologists previously thought. By approximately 23 million years ago the landmass may have been completely submerged. Today, most of the landmass (94%) remains submerged beneath the Pacific Ocean. How long ago was Zealandia above water? The submerged continent of Zealandia broke away from
on April 16, 2022
What are the economic importance of minerals?
GeologyEconomic minerals include: energy minerals, metals, construction minerals and industrial minerals. Energy minerals are used to produce electricity, fuel for transportation, heating for homes and offices and in the manufacture of plastics. Energy minerals include coal, oil, natural gas and uranium. What are the most economically important minerals? Within the metal group, the principal native